/*
 * Copyright 2020 Makani Technologies LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef AVIONICS_FIRMWARE_DRIVERS_INA219_H_
#define AVIONICS_FIRMWARE_DRIVERS_INA219_H_

#include <stdbool.h>
#include <stdint.h>

#include "avionics/firmware/drivers/ina219_types.h"

typedef enum {
  kIna219StateReset,
  kIna219StateConfigure,
  kIna219StateReadShunt,
  kIna219StateReadBus,
  kIna219StateIdle
} Ina219State;

typedef struct {
  Ina219State state;
  bool first_entry;
  bool error;
  Ina219OutputRaw output;
} Ina219;

void Ina219Init(Ina219 *device);
bool Ina219Poll(const Ina219Config *config, Ina219 *device);

#endif  // AVIONICS_FIRMWARE_DRIVERS_INA219_H_
